Abstract: A venting device includes a first flap, which is configured to be actuated to swing upward during a rising time, and a second flap, which is disposed opposite to the first flap and configured to be actuated to swing downward during a falling time, a first actuating portion disposed on the first flap, and a second actuating portion disposed on the second flap. The venting device configured to form a vent is disposed within a wearable sound device or to be disposed within the wearable sound device. The vent is formed via applying a first voltage to the first actuating portion and applying a second voltage on the second actuating portion, such that the venting device gradually forms the vent.

Abstract: In a method for permitting change of an electronic card without powering off and a communications device employing the method, the communications device includes a control module, a card connector for receiving the electronic card, and a trigger module. The method includes: when the communications device is in an on state, triggering the trigger module to generate a trigger signal to the control module; enabling the control module to determine a card insertion mode if it is detected that a state of electrical connection of the card connector with an electronic card changes from a disconnected state to a connected state after receipt of the trigger signal; and enabling the control module for supplying power to the electronic card inserted into the card connector upon determining the card insertion mode.

Abstract: An electronic device includes a first circuit board having a first audio source and a first reference grounding end, a second circuit board having a second audio source and a second reference grounding end, a flexible board cable, a grounding wiring, a selection unit, and a receiver. The flexible board cable couples the first audio source to the second circuit board. The grounding wiring couples the first grounding end to the second circuit board. The selection unit is used for selecting one from the first and second audio sources to output and selecting one from the first and second reference grounding ends to output. An input end of the receiver is controlled by the selection unit to be connected to the first or second audio sources, and a grounding end of the receiver is controlled by the selection unit to be connected to the first or second reference grounding ends.

Abstract: In a method for permitting change of an electronic card without powering off and a communications device employing the method, the communications device includes a control module, a card connector for receiving the electronic card, and a trigger module. The method includes: when the communications device is in an on state, triggering the trigger module to generate a trigger signal to the control module; enabling the control module to determine a card insertion mode if it is detected that a state of electrical connection of the card connector with an electronic card changes from a disconnected state to a connected state after receipt of the trigger signal; and enabling the control module for supplying power to the electronic card inserted into the card connector upon determining the card insertion mode.

Abstract: An electronic device includes a first circuit board having a first audio source and a first reference grounding end, a second circuit board having a second audio source and a second reference grounding end, a flexible board cable, a grounding wiring, a selection unit, and a receiver. The flexible board cable couples the first audio source to the second circuit board. The grounding wiring couples the first grounding end to the second circuit board. The selection unit is used for selecting one from the first and second audio sources to output and selecting one from the first and second reference grounding ends to output. An input end of the receiver is controlled by the selection unit to be connected to the first or second audio sources, and a grounding end of the receiver is controlled by the selection unit to be connected to the first or second reference grounding ends.